Background-colour to a widget - window

arsinte_andrei

So.. basically I'm trying to add a background colour to a window that is a subclass to a widget which itself is a child of the main window (this is also a subclass from the widget)

border-color: rgb(127, 255, 80);
background-color: rgb(124, 124, 255);

I've put this in Qt designer - witch is shown exactly how I want it... but when I run is not working.. I get the normal widget colour - the background colour is applied only to the children of the Widget and not to the widget itself - I 've put a Qpush button there to test it...

I've tried with qrc - resource file and put the stylesheet.qss file there.. but without any success at the moment...

QFile file(":/atpsettings.qss");
	file.open(QFile::ReadOnly);
	QString styleSheet = QLatin1String(file.readAll());
	this->setStyleSheet(styleSheet);

	qDebug() <<this << styleSheet;

and yes on Qdebug I see the whole file.. is reading it - again the settings affect only the children of the widget, not the widget itself - this is what I'm after

So the big questin.. how can I change the background colour of the widget??

arsinte_andrei

if in the main window I start the child like that (which I do not want to)

widgetSettings = new atpWidgetSettings();

then I get a second window with everything as I want it to be
but if I start it like

widgetSettings = new atpWidgetSettings(this);

then all my stylesheets and everything is going away... any help how to overcome this and not to inhered the styles from the parent?? it seems just a parent problem....hm how can I overcome it??

arsinte_andrei

ok.. this is how you can sort it out in order to have any widget with custom colours...

void atpWidgetSettings::paintEvent(QPaintEvent* event) {
 QStyleOption opt;
 opt.init(this);
 QPainter p(this);
 style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);

 QWidget::paintEvent(event);
}

I do not take credit for this.. here is the coplete ansewr
https://wiki.qt.io/How_to_Change_the_Background_Color_of_QWidget